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Why is electricity essential for both improving public health and modern communications?
Public health is improved by getting knowledge and information, to as large public audience as possible.
This is achieved by better communications.
Modern communication relies on TV, radio, internet and telephone, all of which is reliant on electronics, which is driven by electricity.
Non-electric forms of communication such a semaphore, smoke signals, mail and verbal, just do not compare with modern communication, for getting the message 'out there'.
To get anything done, energy is required - and electrical energy has proved to be a convenient method to transfer the energy from where it is produced, to where it is needed.Small amounts of electrical energy have also been found to be a convenient means to transfer information.
In both cases, electricity is NOT the ONLY alternative - it's just one that has been found to be very convenient, for modern technology.
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very
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